2015-08-02T20:56:24ZComparative study of trusses to determine the influence of the geometry in the structural efficiency, according to the directions of the principal stresseshttp://hdl.handle.net/2117/76193
Comparative study of trusses to determine the influence of the geometry in the structural efficiency, according to the directions of the principal stresses
Señís López, Roger; Brufau Niubó, Roberto; Sastre Sastre, Ramon; Carbajal Navarro, Eusebio Carlos
This study compares flat lattice girders mounted on two supports, based on various design
parameters, to determine which have better structural performance and what geometries are more
efficient. The fundamental goal is to determine the relationship of performance and structural
behavior of each type of framework structure, with respect to the principle of optimization and
improvement in the efficiency of the trusses if their geometry adapts to the directions of the
principal stresses and, of course, to the trajectory of the isostatic lines of the equivalent continuous
structural resistant element under the loading actions. In this study, 256 models of lattice girders,
with different triangulations, are analyzed to determine their performance and structural behavior.
The results conclude that the trusses gain up to 25-35% efficiency when they identify the trajectory
of the isostatic lines generates by the acting loads.
2015-01-01T00:00:00ZAplicación de los principios de las estructuras tensegrity a las tensoestructurashttp://hdl.handle.net/2117/28252
Aplicación de los principios de las estructuras tensegrity a las tensoestructuras
Llorens Duran, Josep Ignasi de
Los principios de las estructuras “tensegrity” se pueden aplicar a la arquitectura textil para aligerar los elementos estructurales de soporte. Después de repasar su definición y principales características, se presentan algunas de sus ventajas a través de cuatro proyectos realizados por el autor junto con C.García-Diego y H.Pöppinghaus. Son la Cafetería del Pabellón de Venezuela (Hanover), la gasolinera BP de Hospitalet de Llobregat, la cubierta de las ruinas de la Casa del Anfiteatro de Mérida y la Cúpula de cables del Foro de las Culturas, Barcelona 2004.
2015-01-01T00:00:00ZAtlas de detalles de las tensoestructurashttp://hdl.handle.net/2117/28250
Atlas de detalles de las tensoestructuras
Llorens Duran, Josep Ignasi de
Este atlas pretende establecer los principios de proyecto y el repertorio razonado de los detalles constructivos de las tensoestructuras. La realización de proyectos, así como la enseñanza, requieren documentación básica que algunas veces escasea sobre todo en el área de las técnicas emergentes. Por este motivo, el grupo de investigación de arquitectura y tecnología de la Escuela de Arquitectura de Barcelona - Universidad Politécnica de Cataluña inició en 1975 una colección de detalles constructivos relativos a las tensoestructuras. Como quiera que el estudio o proyecto de un detalle constructivo requiere el conocimiento de los principios en que se basa, así como de la obra de que forma parte y su contexto, la colección ha resultado insuficiente y ha habido que completarla con estos conceptos e informaciones. A partir de la observación descriptiva y la clasificación de los detalles disponibles pertenecientes a las obras realizadas, visitadas o publicadas, se han formulado los principios que rigen el comportamiento de los detalles estudiados. Estos principios han sido verificados y ajustados utilizándolos para evaluar los resultados obtenidos tanto en las obras analizadas como en las realizadas con posterioridad.
2015-01-01T00:00:00ZAnclajes recuperables de tensoestructurashttp://hdl.handle.net/2117/28211
Anclajes recuperables de tensoestructuras
Llorens Duran, Josep Ignasi de
2014-01-01T00:00:00ZPlanned vs. real city: 3D GIS for analyzing the transformation of urban morphologyhttp://hdl.handle.net/2117/28173
Planned vs. real city: 3D GIS for analyzing the transformation of urban morphology
Garcia-Almirall, M. Pilar; Valls Dalmau, Francesc; Moix Bergadà, Montserrat
Cities are constantly evolving: buildings are built and demolished, altering the landscape of our cities; Urban Plans describe what we want our cities to be, undergoing revisions as we change our vision of the future of our cities. This paper presents a methodology to model the interactions between what the city is and what it wants to become. The old quarter of Sant Andreu in Barcelona (Spain) was used in a pilot study for the development of a methodology to automatically quantify and visualize the outcome of regulation changes as a strategic tool for the Urban Planning Department of the Barcelona City Council. This paper describes a methodology developed to measure the magnitude of the buildings conformity or disconformity to the determinations of the Urban Plan (current and proposed), and to display this information in 3D, to allow a more natural interpretation of the results. Special care was put into the methodological approach to ensure that it could be replicated at neighbourhood or city-wide scales. A methodology for the interpretation of the heights of staircase towers and ventilation courtyards from neighbouring entities heights, through the analysis of adjacency relationships in a non-topological Geographic Information System is also discussed.
2014-01-01T00:00:00ZMeasuring functional polycentricity for the analysis of structural places. The case of the seven principal metropolitan areas in Spain.http://hdl.handle.net/2117/27963
Measuring functional polycentricity for the analysis of structural places. The case of the seven principal metropolitan areas in Spain.
Ruiz Estupiñán, Nancy Helena; Marmolejo Duarte, Carlos Ramiro; Tornés Fernández, Moira
The study of polycentrism is responsible for identifying subcenters that integrate urban systems, as well as measuring the magnitude of the phenomenon in urban reality. This paper presents the analysis of measure of functional polycentricity, applying the functional polycentricity index presented by Green (2007) for seven metropolitan areas in Spain; finding their determinants, incorporating variables of magnitude, territorial balance and complexity to a linear regression model. It was found that from the functional perspective, the studied metropolitan areas of Spain have low levels of polycentricity. In order of magnitude was found to be less polycentric in their subsystems, Zaragoza, Madrid and Seville metropolitan areas; and in contrast Bilbao, Barcelona and Valencia with the largest. Malaga was found as a medium polycentricity level system despite the presence of few subcenters. Was found also that, although the incipient index, the variables that can best explain polycentricity are the size of the subsystem and number of nodes, the specialization and diversity of jobs, and also variables that explain income and mobility within municipalities of the subsystems that conform metropolitan areas in study.
2013-01-01T00:00:00ZHousing typology in Santa Coloma de Gramenet (Barcelona) 1950-1975. A methodology for analysis and further improvement of common housinghttp://hdl.handle.net/2117/27951
Housing typology in Santa Coloma de Gramenet (Barcelona) 1950-1975. A methodology for analysis and further improvement of common housing
Planells, Ana; Cornadó Bardón, Còssima; Díaz Gómez, César
2013-01-01T00:00:00ZThermal rehabilitation in a residential area of Tarragona. A case study in S. Pere and S. Pau neighbourhoodhttp://hdl.handle.net/2117/27950
Thermal rehabilitation in a residential area of Tarragona. A case study in S. Pere and S. Pau neighbourhood
Garcia Moya, Alba; Cornadó Bardón, Còssima; Díaz Gómez, César
2013-01-01T00:00:00ZWine cathedrals: making the most of masonryhttp://hdl.handle.net/2117/27943
Wine cathedrals: making the most of masonry
Llorens Duran, Josep Ignasi de
The ‘wine cathedrals’ were wine cellars built for agricultural cooperatives in southern Catalonia in the early twentieth century. They were developed by Cesar Martinell (1888–1973). As the cooperatives could not afford to build with steel or concrete, he used traditional masonry and drew on the achievements of contemporary modern architects such as Antoni Gaudi´, Lluis Dome` nech and Josep Puig. Martinell took advantage of the constructive and architectural possibilities of brick by using it not only for walls and pillars but also to replace main beams, joist beams, floor slabs and roofs. This gave rise to a type of building in which the constructive system becomes the architectural form and satisfies the technical and functional requirements. Some of the resources used by Martinell are still valid in low-cost and sustainable construction today when labour and local resources are more readily available than energy and imported products.
2013-07-01T00:00:00ZZoomorphism and bio-architecture: between the formal analogy and the application of nature's principleshttp://hdl.handle.net/2117/27779
Zoomorphism and bio-architecture: between the formal analogy and the application of nature's principles
Llorens Duran, Josep Ignasi de
2011-01-01T00:00:00Z